Salem's Top Witch Gets Ruthless on This Week's Episode (VIDEO)

Mary Sibley (Janet Montgomery) is showing her ruthless side in this week's episode of Salem. In our exclusive clip, the town's top witch is gearing up for an attack from the town's top Puritan, Hathorne (Jeremy Crutchley). As a visibly ailing George Sibley (Michael Mulheren) gasps for breath, Mary orders him to prepare for Hathorne's challenge. When he seems reluctant, Mary asserts her dark dominance by letting him know just how much she thinks his life is worth in a town overrun by the occult. (Hint: Not much.)

The full episode airs Sunday, May 3 on WGN America.